ASTROSAT CZTI

Data Quality Report

Orbit 35031

Creation date: 2022-06-11T13:37:22.720263
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_010T01_9000005016_35031cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35031cztM0_level2_quad_clean.evt
Size (bytes)415,509,12083,364,480
Size396.3 MB 79.5 MB
Events in quadrant A2,610,970557,861
Events in quadrant B2,734,842568,633
Events in quadrant C2,806,753540,239
Events in quadrant D4,095,660511,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106463
B0110112
C0110402
D0156382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494190.182149%
B4941430.870269%
C4941501.011941%
D49413196.456183%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7065 4942 0 0 0.00% 0.00%
B 7065 4942 19 19 0.27% 0.38%
C 7065 4942 42 42 0.59% 0.85%
D 7065 4942 280 280 3.96% 5.67%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 78077 614.77 636 628 126.0
A 5 98 51908 407.05 636 628 126.0
A 13 6 24239 187.42 636 628 126.0
B 5 172 171159 1424.23 637 623 119.7
B 4 232 28184 230.18 637 623 119.7
B 5 255 17769 143.19 637 623 119.7
C 15 214 207567 1488.43 609 616 139.0
C 0 10 133940 958.89 609 616 139.0
C 14 67 34232 241.77 609 616 139.0
D 8 195 701826 4909.05 591 577 142.8
D 10 118 412582 2884.22 591 577 142.8
D 12 128 158245 1103.75 591 577 142.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter